205043211 has 8 divisors (see below), whose sum is σ = 303767760. Its totient is φ = 136695456.

The previous prime is 205043177. The next prime is 205043213. The reversal of 205043211 is 112340502.

It is not a de Polignac number, because 205043211 - 2⁶ = 205043147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205043213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3797070 + ... + 3797123.

It is an arithmetic number, because the mean of its divisors is an integer number (37970970).

Almost surely, 2^205043211 is an apocalyptic number.

205043211 is a deficient number, since it is larger than the sum of its proper divisors (98724549).

205043211 is an equidigital number, since it uses as much as digits as its factorization.

205043211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7594202 (or 7594196 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 205043211 is about 14319.3299773418. The cubic root of 205043211 is about 589.6782800265.

Adding to 205043211 its reverse (112340502), we get a palindrome (317383713).

The spelling of 205043211 in words is "two hundred five million, forty-three thousand, two hundred eleven".